Collection and classification of ORGANIC liquid waste from experimental facilities

                

                                                                                                                

Class

Group /Contents

Container

Remarks

1

WASTE ORGANIC SOLVENTS

Hydrocarbons, alcohols, ketones, aldehydes, esters, weak acids, amines, gas oil, kerosene, etc.

White   8L

Waste solvent with flash point lower than 70Ž.

Water content should be below 50 %.

Waste organic solvents should be free from slightly and non combustible organic solvents and waste oil groups.

Content of compounds having nitrogen such as acetonitrile, pyridine, amines etc. or sulphur such as thiol, thiourea, etc. or organic phosphorus compounds should be less than 10 %.

2

SLIGHTLY and  NON COMBUSTIBLE ORGANIC SOLVENTS

Chloroform, carbon tetrachloride, dichloromethane, etc.

White   8L

Slightly and non combustible organic solvents should be free from CN compounds such as acetonitrile, etc.

 

3

WASTE OILS

Machine oils, etc.

White   8L

Waste oil with flash point higher than 70Ž

Waste oils should be free from CN compounds such as acetonitrile, etc.

Waste oils should be free from slightly and non combustible organic solvents group.

4

DILUTE AQUEOUS ORGANIC SOLUTIONS

Aqueous organic acid solutions

Dilute aqueous organic solvents (alcohols, formalin, amines, etc.)

White   8L

Water content should be greater than 80 % with pH >4.0.

Dilute aqueous organic solutions should be free from non aqueous solvents.

Content of compounds having nitrogen such as acetonitrile, pyridine, amines etc. or sulphur such as thiol, thiourea, etc. or organic phosphorus compounds or formalin should be less than 10 %.

 

 

Ethers(diethyl ether, tetrahydrofuran, dioxane, dimethoxyethane, etc.)

Collodion

 

Ethers should be diluted with over 20-folds of water and mixed with no other waste solvents.

 

Collodion content should be less than 1 %.

 

Carbon disulphide

 

Convert carbon disulphide to xanthate or dithiocarbamate and dissolve in water.

 

Aqueous organic solutions containing metals

 

Photographic developer

 

Add sodium carbonate or sodium hydroxide to the optimum pH, allow to stand and filter off, treat precipitate as inorganic sludge,  treat filtrate as dilute organic aqueous solutions group. (see note 5)

Fixer and developer should be stored in separate containers.

5

Photographic fixer

White   8L

Fixer and developer should be stored in separate containers.

 

Do not store  in container

 

‚lore than 100 mg of total heavy metals.

Especially mercury and mercury compounds.

More than 10% of other inorganic compounds.

Especially more than 0.5% of fluoride and their inorganic and organic compounds..

Precipitate and sludge.

Polychlorinated biphenyls (PCB), Polychlorinated naphthalene (chlorine number more than 3) and Hexachlorobenzene ; they should be carefully stored at the user's laboratory.

Explosive substances by self-decomposition, such as polynitrocompounds peroxides, etc.

Highly reactive and dangerous substances,  such as styrene monomer, etc.

 

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